Final answer:
The volume of the gas tank is 288 cubic feet.
Step-by-step explanation:
The volume of a rectangular prism can be found by multiplying the length, width, and height together. In this case, the length of the gas tank is 6 feet, the width is 8 feet, and the height is 6 feet. To find the volume, multiply these three dimensions together:
Volume = Length x Width x Height
Volume = 6 ft x 8 ft x 6 ft = 288 cubic feet
Therefore, the volume of the gas tank is 288 cubic feet.